|Publication number||US4399922 A|
|Application number||US 06/302,045|
|Publication date||Aug 23, 1983|
|Filing date||Sep 14, 1981|
|Priority date||Sep 14, 1981|
|Also published as||US4645089|
|Publication number||06302045, 302045, US 4399922 A, US 4399922A, US-A-4399922, US4399922 A, US4399922A|
|Original Assignee||Larry Horsley|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (80), Classifications (10), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The objective of the invention is to improve on a commonly used electrical outlet box mounting of the type shown in U.S. Pat. No. 4,135,337. While the mounting disclosed in this patent is highly satisfactory once assembled or installed on a supporting wall stud, it requires an unsatisfactory amount of time and labor to install. The present invention seeks to substantially reduce this time and labor in the interest of economy, without sacrifice of any function in the installed device.
In the prior art exemplified by the referenced patent, it is first necessary to remove the outlet box mounting screws in order to attach the box to a provided mounting bracket which in turn is attached to a metal wall stud. A dry wall ring must also be connected to the far side of the mounting bracket by means of the removed outlet box screws. Following the assembly of the outlet box mounting bracket and dry wall ring, this unit is attached to the wall stud with two screws. Following the hanging of dry wall on the stud, the electrician must make another trip to each box location and install two more screws in the mounting bracket on the opposite side of the stud in order to stabilize the box against the dry wall so that it will not move when electrical devices are being installed in the box. These prior art installation procedures can be quite costly in buildings where many outlet boxes are involved.
The present invention simplifies the installation procedure and saves time and therefore money in two ways. By providing the oversize screw head clearance openings in the mounting bracket it becomes unnecessary to remove and then replace the box mounting screws in order to assemble the box with the bracket and the dry wall ring at the far side of the bracket. By providing the integral adjustable length right angle extension on the mounting bracket, it is no longer necessary for the electrician to return to the outlet box after dry wall hanging to install the two additional anchor screws. The extension fully stabilizes and anchors the box in cooperation with its two mounting screws and the box will not move while electrical installations are taking place. The engagement of the extension with the far side dry wall section resists movement of the box.
FIG. 1 is an exploded perspective view of the invention.
FIG. 2 is a front elevation depicting the installation of a dry wall ring.
FIG. 3 is a similar view showing the assembly attached to a wall stud.
FIG. 4 is a horizontal section taken on line 4--4 of FIG. 3.
FIG. 5 is a perspective view showing a modification.
FIGS. 6, 7 and 8 are fragmentary views similar to FIG. 4 showing the mounting bracket of FIG. 5 installed in walls of different thicknesses.
FIG. 9 is a flow chart showing the steps involved in the installation of the outlet box.
Referring to the drawings in detail wherein like numerals designate like parts, a conventional outlet box 10 is equipped at diagonally opposite corners with two mounting screws 11. A mounting bracket 12 for the outlet box in the form of a flat rectangular plate is provided with four openings 13 in a rectangular array to enable installation of the box in any required position on the job site. The openings 13 are sufficiently large to provide clearance for the passage of the heads of the two screws 11 therethrough during the assembly process so as to eliminate necessity for first removing the screws 11 and then re-installing them. It is only necessary that the screws 11 be backed out of their corner mountings in the box 10 about one-half of their lengths to enable assembling the box with the mounting bracket 12 and with a dry wall 14 customarily provided at the far side of the mounting bracket. The bracket 12 is provided with a central cut out or opening C which is substantially dimensionally the same as the interior of the outlet box 10. The mounting bracket 12 is further provided adjacent one end thereof with small openings O that are designed to receive screws 21 for attaching the bracket 12 to a wall stud 20.
An important feature of the invention is the provision on the mounting bracket 12 at one side thereof of an integral stiff right angular extension plate 15 preferably reinforced by corner gussets 16 to resist bending. The purpose of this extension plate will be described.
The dry wall ring 14 carries a flat base plate 17 having angled slots 18 at two of its corners and parallel slots 19 at its other corners.
With reference to FIGS. 2 and 3, the installer of the outlet box merely backs out the two screws 11 about half way and passes their heads through two of the openings 13 of mounting bracket 12 so as to hang the box on the bracket. One slot 19 of the dry wall ring is engaged with the shank of one screw 11 and the dry wall ring is rotated as shown by the arrow in FIG. 2 to engage one of the angled slots 18 with the shank of the diagonally opposite screw 11. Following this, the two screws 11 are tightened and the three components 10, 12 and 14 are firmly assembled.
Following this assembly procedure, the edge portion of mounting bracket 12 away from the extension 15 is attached to an adjacent wall stud 20 by the utilization of two screws 21, and this operation essentially completes the mounting procedure for the box. It is unnecessary for the installer to return to the outlet box as in the prior art to install two more anchoring screws after the hanging of the dry wall. The reason for this is that the extension 15 bears against the dry wall 22 at the side of the wall away from the ring 14, FIG. 4, and this contact stabilizes the box assembly and resists its movement in concert with the two screws 21 when electrical devices are later installed.
It can be seen that the invention saves the installers time in two ways. First, they do not have to remove and re-install the two screws 11 and, second, they do not have to make a second trip to the box after the dry wall is hung to place further anchoring screws in the assembly. FIG. 9 depicts the simple sequence of steps carried out by the installers.
FIGS. 5 through 8 show a modification of the invention in which the extension 15 of bracket 12 has break-away strips 23 and 24 defined by parallel weakening lines 25 on the extension 15. This enables the mounting bracket to be utilized conveniently with walls of differing thicknesses as shown in FIGS. 6, 7 and 8. When a wall contains a four inch interior space, FIG. 8, the entire extension 15 is utilized. When the wall has a three and one-half interior space, FIG. 7, the strip 23 is broken off and the remaining reduced width extension 15a is utilized. When the wall has a two and one-half inch space, FIG. 6, both strips 23 and 24 are removed to leave a further reduced width extension 15b which contacts the far side dry wall section. The advantages of the invention will be realized by those skilled in the art.
It is to be understood that the forms of the invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of the invention or scope of the subjoined claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1705768 *||Feb 23, 1926||Mar 19, 1929||Chicago Jefferson Fuse & Elect||Switch-box mounting|
|US1774934 *||Sep 25, 1928||Sep 2, 1930||Mangin James||Outlet box and support|
|US1920811 *||Oct 26, 1931||Aug 1, 1933||Gen Electric||Outlet box|
|US1961728 *||Mar 22, 1932||Jun 5, 1934||Harry L Arnest||Electrical outlet box|
|US2423757 *||Jan 11, 1944||Jul 8, 1947||Ottomus G Dedge||Adjustable outlet box support|
|US4057164 *||Feb 20, 1976||Nov 8, 1977||William Maier||Electrical outlet box mounting|
|US4135337 *||Sep 12, 1977||Jan 23, 1979||Medlin Lewis B||Mounting means for electric outlet box|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4533060 *||Jan 9, 1985||Aug 6, 1985||Medlin Lewis B||Mounting bracket for electrical outlet boxes|
|US4569458 *||Aug 19, 1983||Feb 11, 1986||Horsley Larry L||Mounting for electrical outlet box|
|US4572391 *||Jul 1, 1985||Feb 25, 1986||Medlin Lewis B||Brackets for mounting pairs of electrical outlet boxes|
|US4603789 *||Dec 24, 1985||Aug 5, 1986||Medlin Sr Lewis B||Extension bracket for mounting electrical outlet box|
|US4645089 *||Apr 22, 1985||Feb 24, 1987||Martha Willene Horsley||Adjustable outlet box mounting|
|US4673097 *||May 28, 1986||Jun 16, 1987||Schuldt Larry J||Electrical box with integral air and moisture barrier|
|US4688693 *||Aug 4, 1986||Aug 25, 1987||Medlin Jr Lewis B||Outlet box bracket with stabilizer|
|US4732356 *||Oct 23, 1986||Mar 22, 1988||Medlin Sr Lewis B||Outlet box bracket with adjustable stabilizer|
|US4943022 *||Apr 12, 1989||Jul 24, 1990||B-Line Systems, Inc.||Bracket for mounting an electrical box on a wall stud|
|US4944420 *||Jan 6, 1989||Jul 31, 1990||Abb Power T&D Company||Oil-filled transformer housing|
|US4964525 *||Sep 21, 1989||Oct 23, 1990||G.B. Electrical Inc.||Electrical box mounting bracket|
|US4978092 *||Dec 4, 1989||Dec 18, 1990||Commander Electrical Materials, Inc.||Universal support bracket for attachment to the back of an electrical box|
|US5005792 *||Apr 7, 1989||Apr 9, 1991||B-Line Systems, Inc.||Bracket for mounting an electrical switchbox on a wall stud|
|US5025944 *||Oct 19, 1990||Jun 25, 1991||Rodick Steven F||Outlet assembly for mounting to a wall stud|
|US5031789 *||Apr 13, 1990||Jul 16, 1991||Fl Industries, Inc.||Standoff for outlet boxes|
|US5098046 *||Feb 12, 1990||Mar 24, 1992||Webb Ronald D||Electrical junction box mounting bracket device and method|
|US5224673 *||Mar 23, 1992||Jul 6, 1993||Webb Ronald D||Electrical junction box mounting bracket device and method|
|US5288041 *||Mar 20, 1992||Feb 22, 1994||Webb Ronald D||Electrical junction box mounting bracket device and method|
|US5386959 *||Jan 15, 1992||Feb 7, 1995||Erico International Corporation||Box support|
|US5399806 *||Feb 21, 1992||Mar 21, 1995||Olson; Richard A.||Modular electrical wiring system|
|US5423499 *||Jul 2, 1993||Jun 13, 1995||Webb; Ronald D.||Electrical junction box mounting bracket device and method|
|US5450974 *||Sep 14, 1994||Sep 19, 1995||Lippa; Jerome M.||Mounting plate and cover assembly for an electrical outlet box|
|US5587555 *||Jun 3, 1994||Dec 24, 1996||B-Line Systems, Inc.||Conductor holding device|
|US5595362 *||Dec 17, 1992||Jan 21, 1997||B-Line Systems, Inc.||Electrical box mounting bracket|
|US5646371 *||Apr 13, 1994||Jul 8, 1997||Thomas & Betts Corporation||Electrical outlet box and plate therefor incorporating a rear support bracket|
|US5740936 *||Nov 20, 1996||Apr 21, 1998||Nash; William L.||Electric outlet box assembly|
|US5762223 *||Jul 29, 1997||Jun 9, 1998||Fan Tex, Inc.||Electrical box for ceiling fan support|
|US5804763 *||Jan 13, 1997||Sep 8, 1998||American Seating Company||Wall panel assembly with electrical outlet|
|US6184468 *||Feb 22, 1999||Feb 6, 2001||Joseph L. Speziale||Electrical box with semi-attached adaptor|
|US6188022 *||Jun 18, 1999||Feb 13, 2001||Ping He||Electrical box mounting system having removable rings|
|US6484979||Jul 21, 2000||Nov 26, 2002||Lewis B. Medlin, Jr.||Adjustable electrical box support|
|US6484980||Mar 28, 2001||Nov 26, 2002||Lewis B. Medlin, Sr.||Field bendable tab for electrical box support|
|US6573449 *||Apr 25, 2001||Jun 3, 2003||Paul A. Vrame||Floor stand for electrical box having plaster ring|
|US6576837||Jan 30, 2002||Jun 10, 2003||Belinda F. Peters||Outlet box cover with mounting clips|
|US6749162 *||Sep 27, 2002||Jun 15, 2004||Hubbell Incorporated||Breakaway bracket assembly|
|US6794573 *||Mar 2, 2004||Sep 21, 2004||Arlington Industries, Inc.||Prepackaged mounting assembly|
|US6871827||May 3, 2002||Mar 29, 2005||Pw Industries, Inc.||Universal electrical outlet box mounting bracket|
|US6881900 *||Nov 26, 2003||Apr 19, 2005||Alan P. Halbert||Ceiling box safety mounting bracket|
|US6924431 *||Sep 20, 2004||Aug 2, 2005||Arlington Industries, Inc.||Prepackaged mounting assembly|
|US6956170 *||Apr 1, 2004||Oct 18, 2005||Gretz Thomas J||Prepackaged mounting assembly|
|US6965077||Dec 6, 2004||Nov 15, 2005||Halbert Alan P||Article of manufacture for reinforcing a ceiling electrical box with fixture support|
|US7083467||Jan 7, 2005||Aug 1, 2006||Quixemble, Inc.||Connection box stabilizer|
|US7135640 *||Jul 1, 2005||Nov 14, 2006||Arlington Industries, Inc.||Prepackaged mounting assembly|
|US7306482||Jul 31, 2006||Dec 11, 2007||Cheetah Usa Corp.||Electrical connection box|
|US7410072 *||Oct 21, 2004||Aug 12, 2008||Wesley Gene Wegner||Electrical box extension|
|US7531744||Aug 31, 2007||May 12, 2009||Pass & Seymour, Inc.||Ceiling box|
|US7637385 *||Oct 30, 2007||Dec 29, 2009||Wesley Gene Wegner||Electrical box extension|
|US7659477||Aug 1, 2006||Feb 9, 2010||Hubbell Incorporated||Mounting bracket with far side support|
|US7902457||Oct 27, 2009||Mar 8, 2011||Hubbell Incorporated||Adjustable mounting bracket|
|US7923635||Jan 11, 2010||Apr 12, 2011||Hubbell Incorporated||Mounting bracket with far side support|
|US7956295||Mar 30, 2007||Jun 7, 2011||Bocci Design & Manufacturing Inc.||Method and apparatus for finished installation of electrical outlet box without use of external cover plate|
|US8029301||Nov 2, 2009||Oct 4, 2011||Cheetah Usa Corp.||Wide safety strap for electrical fixtures|
|US8042776||Feb 23, 2006||Oct 25, 2011||Hubbell Incorporated||Adjustable mounting bracket|
|US8109785||Mar 18, 2010||Feb 7, 2012||Cheetah Usa Corp.||Connection box assembly method|
|US8232482||Aug 8, 2008||Jul 31, 2012||Bocci Design & Manufacturing, Inc.||Method and apparatus for finished installation of electrical outlet box without use of external cover plate|
|US8299359||May 5, 2011||Oct 30, 2012||Leviton Manufacturing Company, Inc.||Wiring device and cover plate snap-on assembly|
|US8403289||Oct 7, 2009||Mar 26, 2013||Eric R. Rinderer||Universal electric box mounting device|
|US8912439||Jul 18, 2012||Dec 16, 2014||Bocci Design & Manufacturing, Inc.||Method and apparatus for finished installation of electrical outlet box without use of external cover plate|
|US8998154||Sep 24, 2013||Apr 7, 2015||Thomas & Betts International, Inc.||Field installable support bracket assembly|
|US9362730||Sep 17, 2014||Jun 7, 2016||Cablofil, Inc.||Bracket and assembly for electrical devices|
|US20020141002 *||Mar 27, 2002||Oct 3, 2002||Minolta Co., Ltd.||Image pickup apparatus|
|US20040061033 *||Sep 27, 2002||Apr 1, 2004||Hubbell Incorporated||Breakaway bracket assembly|
|US20040242061 *||Mar 29, 2004||Dec 2, 2004||Gledhill Dale C.||Connection box stabilizer|
|US20050000717 *||Nov 26, 2003||Jan 6, 2005||Halbert Alan P.||Ceiling box safety mounting bracket|
|US20050082079 *||Oct 21, 2004||Apr 21, 2005||Wegner Wesley G.||Electrical box extension|
|US20050121215 *||Dec 6, 2004||Jun 9, 2005||Halbert Alan P.||Article of manufacture for reinforcing a ceiling electrical box with fixture support|
|US20050181665 *||Jan 7, 2005||Aug 18, 2005||Kidman Brent L.||Connection box stabilizer|
|US20050224249 *||Oct 21, 2004||Oct 13, 2005||Wegner Wesley G||Electrical box extension|
|US20070194188 *||Feb 23, 2006||Aug 23, 2007||Johnson Steven J||Adjustable mounting bracket|
|US20080029287 *||Aug 1, 2006||Feb 7, 2008||Hubbell Incorporated||Mounting bracket with far side support|
|US20080047729 *||Oct 30, 2007||Feb 28, 2008||Wegner Wesley G||Electrical Box Extension|
|US20080236884 *||Mar 30, 2007||Oct 2, 2008||Omer Arbel|
|US20100006723 *||Jul 10, 2009||Jan 14, 2010||Frank Yan||Universal Support Bracket for Electrical Junction Box|
|US20100032182 *||Aug 8, 2008||Feb 11, 2010||Omer Arbel|
|US20100089912 *||Dec 2, 2009||Apr 15, 2010||Wesley Gene Wegner||Electrical box extension|
|US20100108347 *||Jan 11, 2010||May 6, 2010||Hubbell Incorporated||Mounting bracket with far side support|
|US20150333493 *||May 18, 2015||Nov 19, 2015||Erico International Corporation||Electrical box bracket|
|USD745466||Nov 5, 2014||Dec 15, 2015||Randl Industries, Inc.||Extension ring with corner attachments|
|USD766186||Nov 11, 2015||Sep 13, 2016||Randl Industries, Inc.||Extension ring with corner attachments|
|WO1991012461A1 *||Feb 12, 1991||Aug 22, 1991||Ronald Dale Webb||Electrical junction box mounting bracket device and method|
|U.S. Classification||220/3.6, 220/3.7, 220/3.9, 248/906, 220/3.3, 174/58|
|Cooperative Classification||Y10S248/906, H02G3/125|
|Sep 8, 1986||FPAY||Fee payment|
Year of fee payment: 4
|Nov 1, 1990||FPAY||Fee payment|
Year of fee payment: 8
|Dec 16, 1994||FPAY||Fee payment|
Year of fee payment: 12